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A free toolkit for developers and designers: color, CSS, image, DevOps, and security utilities. No signup required — runs in your browser. Built for devs.
Format, validate, and minify JSON with instant error locations.
Test regular expressions with live match highlighting and capture groups.
Decode and inspect JSON Web Token headers, payloads, and signatures.
Generate v4 UUIDs in bulk, copy or download as a list.
Write Markdown and see a live-rendered preview side by side.
Encode text to Base64 or decode Base64 back to plain text.
Generate a QR code from a URL, text, or Wi-Fi string, and download it.
Generate strong, random passwords with custom length and rules.
Convert colors between HEX, RGB, and HSL, plus generate a shade ramp.
Browse the full Tailwind CSS color palette and copy any shade.
Beautify or minify messy SQL queries with keyword casing options.
Generate a production-ready Dockerfile from a few quick options.
Send HTTP requests and inspect responses, right in the browser.
Paste an OpenAPI/Swagger JSON spec and browse its endpoints.
Generate a .gitignore file for your stack in seconds.
Searchable reference of common Linux commands.
Build and understand cron expressions with live presets.
Describe a pattern in plain English and get a working regex back.
Common regex patterns and syntax reference, searchable and copyable.
Paste a regex and get a plain-English, token-by-token breakdown.
Build a regex visually by clicking blocks, no syntax memorization needed.
Convert between Unix timestamps and human-readable dates.
Convert a date and time across major timezones at a glance.
Paste a cron expression and see what it means and when it next runs.
Create a live countdown to any date and share it with a link.
Look up any HTTP status code and what it means.
Generate, lock, and export beautiful color palettes instantly.
Check WCAG 2.1 AA/AAA contrast ratios for text and UI colors.
Search 1,500+ open-source icons and copy the import instantly.
Generate deterministic geometric SVG avatars from a seed.
Generate a grid of random colors with lockable swatches.
Browse, copy, and download crisp SVG icons for any project.
Design and export custom Open Graph images for social sharing.
Build linear and radial CSS gradients with a live preview.
Design layered CSS box shadows with a live preview.
Fine-tune individual corner radii with a live preview.
Create frosted-glass UI effects with backdrop blur.
Try Tailwind utility classes on live elements and preview the result.
Browse the full Tailwind color palette and copy any shade.
Strip unnecessary markup from SVG files to reduce size.
Convert raw SVG markup into a React JSX component.
Compress JPG and PNG images in your browser, no upload.
Convert JPG and PNG images to WebP in your browser.
Generate every favicon size you need from one image.
Strip comments and whitespace from CSS to reduce file size.
Generate fluid typography with CSS clamp() and a live preview.
Visually build a CSS grid layout with columns, rows, and gap.
Reformat minified CSS with consistent indentation.
Strip comments and whitespace from JavaScript to reduce size.
Reformat minified JavaScript with readable indentation.
Reformat HTML markup with consistent nested indentation.
Strip comments and whitespace from HTML to reduce size.
Convert a curl command into fetch, axios, Python, Go, or Node code.
Experiment with Flexbox properties on a live preview.
Generate a production-ready Dockerfile for common stacks.
Build a docker-compose.yml from a list of services.
Build a CHANGELOG.md in Keep a Changelog format from version sections.
Build a Conventional Commits message from type, scope, and description.
Generate a Kubernetes Deployment and Service manifest.
Generate a reverse proxy or static site Nginx config.
Generate an Apache VirtualHost configuration.
Edit, sort, and format .env files in a structured table.
Diff env variable keys across environments to catch drift.
Generate a clean README.md from project details.
Convert chmod permissions between numeric, symbolic, and checkboxes.
Generate strong, random passwords with custom rules.
Check password strength and estimated crack time.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.
Encode or decode text and files as Base64.
Percent-encode or decode URLs and query strings.
Generate a downloadable QR code from any text or URL.
Decode a QR code from an uploaded image.
Generate live time-based one-time passwords from a secret.
Encode text to HTML entities or decode HTML entities back to text.
Generate a signed JWT from a header, payload, and secret.
Convert JSON documents to YAML instantly.
Convert YAML documents to JSON instantly.
Convert JSON documents to XML instantly.
Convert XML documents to JSON instantly.
Compare two JSON documents and see what changed.
Generate a JSON array of mock records from a custom field schema.
Paste a raw git diff to render it as a colorized view.
Test JSONPath expressions against a JSON document live.
Convert CSV data to a JSON array of objects.
Convert a JSON array of objects to CSV.
Format, minify, and validate XML markup.
Format and validate YAML documents.
Normalize spacing and structure in TOML config files.
Normalize spacing and structure in INI config files.
Collapse a SQL query to a single compact line.
Reformat a SQL query with indented clauses and uppercase keywords.
Check a SQL query for balanced quotes, parens, and syntax issues.
Build SELECT, INSERT, UPDATE, and DELETE queries from a form.
Pretty-print and compare two XML documents line by line.
Convert text to ASCII codes and back, instantly.
Convert text to binary and binary back to text.
Convert text to hexadecimal and hex back to text.
Convert numbers between decimal, binary, octal, and hex.
Convert text to octal and octal back to text.
Convert text to Unicode code points and back.
Turn any title into a clean, URL-safe slug.
Generate downloadable barcodes in common formats.
Convert text to Morse code and Morse back to text.
Generate placeholder Lorem Ipsum text for mockups.
Count words, characters, sentences, and reading time.
Count characters with and without spaces, live.
Count total, blank, and non-blank lines in text.
Compare two blocks of text and highlight line-by-line changes.
Remove duplicate lines from a list of text.
Sort lines of text alphabetically, numerically, or randomly.
Reverse text by character, word, or line.
Convert text to upper, lower, title, camel, and more.
Strip blank lines from a block of text.
Generate an MD5 hash from any text instantly.
Generate a SHA-1 hash from any text instantly.
Generate a SHA-256 hash from any text instantly.
Generate a SHA-512 hash from any text instantly.
Hash and verify passwords with bcrypt in your browser.
Generate collision-resistant Nano IDs in bulk.
Generate random strings with a custom character set.
Generate random integers or decimals in a custom range, in bulk.
Generate time-ordered, RFC 9562 UUID v7 values in bulk.
Look up the MIME type for any file extension.
Parse a User-Agent string into browser, OS, and device.
Look up geolocation and ISP details for any IP address.
Query A, AAAA, MX, TXT, NS, and CNAME records for a domain.
Look up domain registration and ownership details.
Check whether a TCP port is open on a host.
Inspect a site's SSL certificate details and expiry.
Test whether a URL is allowed by a site's robots.txt.
Validate an XML sitemap's structure and URLs.
Preview an image or palette under different colour vision types.
Build multi-stop colour gradients and export as an image.
Generate complementary, triadic, and analogous colour schemes.
Browse curated colour palettes for design inspiration.
Extract a colour palette from an uploaded image.
Pick the exact colour of any pixel in an uploaded image.
Generate a full 50-950 Tailwind shade ramp from one colour.
Sharpen, upscale, and boost contrast on an uploaded image.
Remove the background from an image automatically.
Convert an image file to a Base64 data URI and back.
Crop an image to a custom shape or freeform selection.
Convert images between JPG, PNG, WebP, and more.
Split one image into an evenly sized grid of tiles.
Combine multiple images into one stitched canvas.
Trace a raster image into scalable SVG vector paths.
Paste an image straight from the clipboard for quick edits.
Generate placeholder images at any size and colour.
Generate seamless textured background patterns.
Convert documents between common text and markup formats.
Inspect metadata and glyphs inside an uploaded font file.
Browse and copy every glyph in a font or Unicode block.
Display text in large, auto-scaling type for presentations.
Calculate ideal CSS line-height for a font size.
Reference chart of standard paper sizes in mm, in, and px.
Convert between pixels and rem units for CSS.
Compare two blocks of text and highlight the differences.
A distraction-free plain text editor in your browser.
Generate a modular type scale from a base size and ratio.
Solve algebraic equations and simplify expressions step by step.
Convert numbers between binary, octal, decimal, and hex at once.
A combined hub for URL, HTML, and Base64 text encoding.
Plot mathematical functions on an interactive graph.
A full scientific calculator with trig and log functions.
Add, subtract, and calculate durations between times.
Convert between length, weight, temperature, and more.
Social Media
Matte Generator
Add a padded matte border around an image for social posts.
Seamless Scroll Generator
Split a tall image into a seamless multi-post carousel.
Social Media Cropper
Crop an image to fit exact social platform dimensions.
Watermarker
Overlay a text or image watermark onto a photo.